The bubble thermometer

Long before our current engineers always repel technology and perpetually improve this essential measurement instrument allowing us to check the temperature that is the Digital thermometer, the members of the Accademia del Cimento de Florence invented the Galileo thermometer (in honor of the well -known physicist who had invented him, the thermoscope). This thermometer, whose operation is based on the thrust of Archimedes, is a small thermodynamic treasure and, today, a real decoration gem. THE Experts in measuring devices that are the advisers of Thermometre.fr, could not miss the Bulle thermometer In their guide ...

What is a bubble thermometer? 📖

There is no more beautiful way to read the temperature than on a bubble thermometer. Unlike the mercury thermometer composed only of a narrow bulb containing mercury which expands and contracts as a function room temperature or outside temperature, THE Galileo thermometer is much more complex.

Indeed, this Bulle thermometer Allows you to take the temperature of a room, namely the room temperature of your living room for example. The bubble thermometer has a sealed glass column. It also contains a transparent liquid, which is generally turned out to be mineral oil. This glass tube contains different spheres of blown glass, each filled with a colored liquid (often alcohol or water and coloring) and weighted by a metal medallion on which is engraved a temperature value displayed in degrees Celsius or Fahrenheit depending on the countries. These small glass balls flow or float in their surrounding liquid depending on time and temperature, slowly and with grace (yes, a thermometer can be graceful).

How does the bubble thermometer work? ⚙️

THE Galileo thermometer works on the principle of Archimedes' push. But what is Archimedes' push? You will tell us! Also called the principle of buoyancy, Archimedes' push determines whether an object floats or flows into a liquid. And make that even steel boats can float. The only factor that determines whether an object floats or flows into a liquid is the density of the object with respect to the density of the liquid in which it is placed:

If the density of the object is greater than the density of the liquid, the object flows;
If the density is lower, the object rises towards the surface;
If the density of the object is equal to the density of the liquid, the object floats.

THE Bulle thermometer, we said before, is made up of several glass bulbs containing different liquids. Each of them has its own properties. Depending on the temperature, they modify the density of the liquid and the flotation increases or diminishes. Each glass bulb with an awarded temperature, it is easy to control the temperature.

Have you understood the operation of this pretty thermometer? What if you had a little experience? 😉

The experience of thermometre.fr advisers with the bubble thermometer ⚗️

Whether you are a physics teacher in a college or simply curious, we invite you to have a little experience that will allow you to Easily understand the operation of the bubble thermometer.

Take a Galileo thermometer and place a small vial of colored in blue next to which you immerse the external probe of a electronic thermometer. Put these thermometers in a room at low temperature, for example 18 ° C, then gradually increase the room temperature.

You then observe the glass spheres Go down and climb according to the temperature displayed on the LCD screen of your digital thermometer.

Other types of thermometer

It is still important to retain several details concerning the bubble thermometer. It is neither fast nor precise. This cannot be used to check the outside temperature, especially at very low or very high temperature at the risk of being disregarded by bad weather. That’s why, the Professional thermometers adviserss of Thermometre.fr strongly recommend that you discover all the thermometers most suited to your use or more broadly, to your sector of activity.

Indeed, you will not have the same need according to your profession. Whether you are a scientist and work on vaccines to keep or transport to a particular temperature. Or whether you are a pizzaiolo and your pizza oven must keep the perfect temperature for your pizzas. Or if you are an agricultural engineer and you have to keep the lots of composts of an entire city.

To go further know all Different types of thermometers Who exist, our temperature sensor advisers have looked into a whole bunch of subjects that might interest you. Do not hesitate to look at the side of Different types of thermometers on the mag ’ of thermometer.eu :